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39 votes
Question 19

What is the value of 6(x-2)(x-3)+4(x-2)(x - 5) when x = -3?
A -340
B
340
440
D -440

User Nishan Dhungana
by
2.6k points

1 Answer

17 votes
17 votes

Answer:

340.

Explanation:

First lets just write out the problem

6 ( x - 2) (x - 3) +4 (x - 2 ) (x - 5)

we substitute x for -3

6 ( -3 -2) ( -3 -3) +4 ( -3 -2) (-3 -5)

now following PEMDAS we solve the inside of the ()'s

6 ( - 5 ) ( - 6 ) +4 ( -5 ) ( - 8 )

PEMDAS Requires us to Multiply first, so we do that

6 x -5 x -6 = 180

-5 x -8 = 40

We now have

180 + 4 x 40

Still multiplying first

180 + 160

and now to finish it off, at them together

340.

-- Gage Millar, Geometry, Algebra 1/2, Pre-Calc Tutor.

User Thiago Peres
by
3.1k points